package net.minecraft.world.gen.structure;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Map.Entry;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;

public class MapGenVillage extends MapGenStructure {
	public static final List<BiomeGenBase> villageSpawnBiomes = Arrays.<BiomeGenBase>asList(
			new BiomeGenBase[] { BiomeGenBase.plains, BiomeGenBase.desert, BiomeGenBase.savanna });

	/** World terrain type, 0 for normal, 1 for flat map */
	private int terrainType;
	private int field_82665_g;
	private int field_82666_h;

	public MapGenVillage() {
		this.field_82665_g = 32;
		this.field_82666_h = 8;
	}

	public MapGenVillage(Map<String, String> p_i2093_1_) {
		this();

		for (Entry<String, String> entry : p_i2093_1_.entrySet()) {
			if (((String) entry.getKey()).equals("size")) {
				this.terrainType = MathHelper.parseIntWithDefaultAndMax((String) entry.getValue(), this.terrainType, 0);
			} else if (((String) entry.getKey()).equals("distance")) {
				this.field_82665_g = MathHelper.parseIntWithDefaultAndMax((String) entry.getValue(), this.field_82665_g,
						this.field_82666_h + 1);
			}
		}
	}

	public String getStructureName() {
		return "Village";
	}

	protected boolean canSpawnStructureAtCoords(int chunkX, int chunkZ) {
		int i = chunkX;
		int j = chunkZ;

		if (chunkX < 0) {
			chunkX -= this.field_82665_g - 1;
		}

		if (chunkZ < 0) {
			chunkZ -= this.field_82665_g - 1;
		}

		int k = chunkX / this.field_82665_g;
		int l = chunkZ / this.field_82665_g;
		Random random = this.worldObj.setRandomSeed(k, l, 10387312);
		k = k * this.field_82665_g;
		l = l * this.field_82665_g;
		k = k + random.nextInt(this.field_82665_g - this.field_82666_h);
		l = l + random.nextInt(this.field_82665_g - this.field_82666_h);

		if (i == k && j == l) {
			boolean flag = this.worldObj.getWorldChunkManager().areBiomesViable(i * 16 + 8, j * 16 + 8, 0,
					villageSpawnBiomes);

			if (flag) {
				return true;
			}
		}

		return false;
	}

	protected StructureStart getStructureStart(int chunkX, int chunkZ) {
		return new MapGenVillage.Start(this.worldObj, this.rand, chunkX, chunkZ, this.terrainType);
	}

	public static class Start extends StructureStart {
		private boolean hasMoreThanTwoComponents;

		public Start() {
		}

		public Start(World worldIn, Random rand, int x, int z, int p_i2092_5_) {
			super(x, z);
			List<StructureVillagePieces.PieceWeight> list = StructureVillagePieces
					.getStructureVillageWeightedPieceList(rand, p_i2092_5_);
			StructureVillagePieces.Start structurevillagepieces$start = new StructureVillagePieces.Start(
					worldIn.getWorldChunkManager(), 0, rand, (x << 4) + 2, (z << 4) + 2, list, p_i2092_5_);
			this.components.add(structurevillagepieces$start);
			structurevillagepieces$start.buildComponent(structurevillagepieces$start, this.components, rand);
			List<StructureComponent> list1 = structurevillagepieces$start.field_74930_j;
			List<StructureComponent> list2 = structurevillagepieces$start.field_74932_i;

			while (!list1.isEmpty() || !list2.isEmpty()) {
				if (list1.isEmpty()) {
					int i = rand.nextInt(list2.size());
					StructureComponent structurecomponent = (StructureComponent) list2.remove(i);
					structurecomponent.buildComponent(structurevillagepieces$start, this.components, rand);
				} else {
					int j = rand.nextInt(list1.size());
					StructureComponent structurecomponent2 = (StructureComponent) list1.remove(j);
					structurecomponent2.buildComponent(structurevillagepieces$start, this.components, rand);
				}
			}

			this.updateBoundingBox();
			int k = 0;

			for (StructureComponent structurecomponent1 : this.components) {
				if (!(structurecomponent1 instanceof StructureVillagePieces.Road)) {
					++k;
				}
			}

			this.hasMoreThanTwoComponents = k > 2;
		}

		public boolean isSizeableStructure() {
			return this.hasMoreThanTwoComponents;
		}

		public void writeToNBT(NBTTagCompound tagCompound) {
			super.writeToNBT(tagCompound);
			tagCompound.setBoolean("Valid", this.hasMoreThanTwoComponents);
		}

		public void readFromNBT(NBTTagCompound tagCompound) {
			super.readFromNBT(tagCompound);
			this.hasMoreThanTwoComponents = tagCompound.getBoolean("Valid");
		}
	}
}
